linux-kernel - Re: [PATCH v3 0/2] drm/bridge: handle gracefully atomic updates during bridge removal

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Message-ID: <20251128-cheerful-muscular-chameleon-1ec2f5@houat>
Date: Fri, 28 Nov 2025 11:07:45 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
	Andrzej Hajda <andrzej.hajda@...el.com>, David Airlie <airlied@...il.com>, 
	Dmitry Baryshkov <lumag@...nel.org>, Hui Pu <Hui.Pu@...ealthcare.com>, 
	Jernej Skrabec <jernej.skrabec@...il.com>, Jonas Karlman <jonas@...boo.se>, 
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
	Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, Simona Vetter <simona@...ll.ch>, 
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>, Thomas Zimmermann <tzimmermann@...e.de>, 
	Francesco Dolcini <francesco@...cini.it>, Emanuele Ghidoli <ghidoliemanuele@...il.com>, 
	João Paulo Gonçalves <jpaulo.silvagoncalves@...il.com>
Subject: Re: [PATCH v3 0/2] drm/bridge: handle gracefully atomic updates
 during bridge removal

On Fri, Nov 28, 2025 at 09:09:17AM +0100, Luca Ceresoli wrote:
> Hi Maxime,
> 
> +Cc Emanuele, Francesco, João
> 
> On Thu Nov 27, 2025 at 7:35 PM CET, Maxime Ripard wrote:
> > On Wed, 12 Nov 2025 17:34:33 +0100, Luca Ceresoli wrote:
> >> This is a first attempt at gracefully handling the case of atomic updates
> >> happening concurrently to physical removal of DRM bridges.
> >>
> >> This is part of the work to support hotplug of DRM bridges. The grand plan
> >> was discussed in [1].
> >>
> >> [ ... ]
> >
> > Reviewed-by: Maxime Ripard <mripard@...nel.org>
> 
> Thanks for reviewing!
> 
> Two alternative patches [0][1] have been sent to address the issue with
> PLL_UNLOCK, and both would conflict with patch 2 of this series. So I'd
> keep this series on hold for a while, waiting for a decision to be taken
> about how the PLL_UNLOCK issue will be handled. I'll then rebase this
> series as needed.

Yep, agreed.

Maxime

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